LED lamp with a heat dissipation device
First Claim
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1. An LED lamp comprising:
- a hollow prism-shaped heat sink with a through hole defined therein from a lateral side to an opposite lateral side thereof;
a plurality of LED modules mounted on a periphery of the heat sink; and
a plurality of fins attached to the heat sink, the fins having external portions outside the heat sink, and internal portions in the through hole of the heat sink in a manner such that at least two fins have the external portions thereof spaced from each other, and the internal portions thereof connecting with each other, thus increasing a heat dissipating area of the heat sink and reinforcing the heat sink;
wherein a pair of annular connections project outwardly from the two opposite lateral sides of the heat sink in such a manner that each of the pair of annular connections has an interior diameter essentially identical to an interior diameter of the heat sink, and an exterior diameter less than an exterior diameter of the heat sink.
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Abstract
An LED lamp includes a heat sink (10) and a plurality of LED modules (20) mounted on a periphery of the heat sink. The heat sink defines a through hole (122) from a lateral side to an opposite lateral side thereof to define a cylindrical inner face. A plurality of fins (16) are attached to the heat sink in a manner such that the fins have spaced external portions (160) extending outwardly from the periphery of the heat sink, and opposite internal portions (162) extending inwardly from the inner face of the heat sink. The internal portions connect with each other to form a joint (164) in the through hole, thus increasing a heat dissipating area of the heat sink and reinforcing the heat sink.
18 Citations
16 Claims
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1. An LED lamp comprising:
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a hollow prism-shaped heat sink with a through hole defined therein from a lateral side to an opposite lateral side thereof; a plurality of LED modules mounted on a periphery of the heat sink; and a plurality of fins attached to the heat sink, the fins having external portions outside the heat sink, and internal portions in the through hole of the heat sink in a manner such that at least two fins have the external portions thereof spaced from each other, and the internal portions thereof connecting with each other, thus increasing a heat dissipating area of the heat sink and reinforcing the heat sink; wherein a pair of annular connections project outwardly from the two opposite lateral sides of the heat sink in such a manner that each of the pair of annular connections has an interior diameter essentially identical to an interior diameter of the heat sink, and an exterior diameter less than an exterior diameter of the heat sink. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A heat dissipation device for dissipating heat generated by LED modules, comprising:
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a hollow prism-shaped heat sink with a through hole define therein from a lateral side to an opposite lateral side thereof, the heat sink comprising a plurality of outer sidewalls adapted for mounting the LED modules thereon, and an inner face enclosing the through hole of the heat sink; and a plurality of fins attached to the heat sink, at least two fins having external portions extending outwardly from the sidewalls of the heat sink, and internal portions extending inwardly from the inner face of the heat sink, wherein the external portions of the at least two fins are spaced from each other, and the internal portions of the heat sink connect with each other to form a joint in the through hole of the heat sink, thus reinforcing the heat sink; and wherein a pair of annular connections are formed outwardly from the two opposite lateral sides of the heat sink and opposing to each other, each annular connections having an inner diameter identical to an inner diameter of the heat sink, and an outer diameter less than an outer diameter of the heat sink. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An LED lamp comprising:
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a heat sink having a tubular wall, a plurality of first fins extending from a center of the tubular wall to an inner periphery of the tubular wall and a plurality of second fins extending outwardly from an outer periphery of the tubular wall; and a plurality of LED modules each having a printed circuit board and a plurality of LEDs mounted on the printed circuit board; wherein each of the LED modules is mounted on the outer periphery of the tubular wall and between two neighboring second fins; and wherein the heat sink comprises two connectors located at two opposite sides of the tubular wall, respectively, each connector having an inner diameter identical to an inter diameter of the tubular wall, and an outer diameter less than an outer diameter of the tubular wall.
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Specification